Function checkload

extlibs/lua/src/loadlib.c:527–535

static int checkload (lua_State *L, int stat, const char *filename) {
  if (stat) {  /* module loaded successfully? */
    lua_pushstring(L, filename);  /* will be 2nd argument to module */
    return 2;  /* return open function and file name */
  }
  else
    return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s",
                          lua_tostring(L, 1), filename, lua_tostring(L, -1));
}


static int searcher_Lua (lua_State *L) {